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USGS 11456000 NAPA R NR ST HELENA CA

  Stream Site

DESCRIPTION:
Latitude 38°30'41",   Longitude 122°27'17"   NAD27
Napa County, California, Hydrologic Unit 18050002
Drainage area: 78.8 square miles
Datum of gage: 193.21 feet above   NGVD29.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2007-10-01  2016-09-24  
 Daily Data
    Temperature, water, degrees Celsius  1961-10-05  1979-01-31  11329 
    Discharge, cubic feet per second  1929-10-01  2016-09-23  27417 
    Gage height, feet  1995-07-01  2000-05-31  3529 
    Suspended sediment concentration, milligrams per liter  1960-11-01  1962-06-29  390 
    Suspended sediment discharge, short tons per day  1960-11-01  1962-06-30  515 
 Daily Statistics 
    Discharge, cubic feet per second  1929-10-01  2016-03-13 27223 
    Suspended sediment concentration, milligrams per liter  1960-11-01  1962-06-29 390 
    Suspended sediment discharge, short tons per day  1960-11-01  1962-06-30 515 
 Monthly Statistics 
    Discharge, cubic feet per second  1929-10  2016-03  
    Suspended sediment concentration, milligrams per liter  1960-11  1962-06  
    Suspended sediment discharge, short tons per day  1960-11  1962-06  
 Annual Statistics 
    Discharge, cubic feet per second  1930  2016  
    Suspended sediment concentration, milligrams per liter  1961  1962  
    Suspended sediment discharge, short tons per day  1961  1962  
 Peak streamflow 1929-12-15  2014-12-11  75 
 Field measurements 1929-12-11  2016-09-08  316 
 Field/Lab water-quality samples 1952-02-10  1979-05-02  184 
 Water-Year Summary 2005  2015  11 

Additional Data Sources

Begin Date

End Date

Count
 Instantaneous-Data Archive  **offsite** 1987-10-02  2007-09-30  519570 
OPERATION:
Record for this site is maintained by the USGS California Water Science Center
Email questions about this site to California Water Science Center Water-Data Inquiries